Knockdown paper box.



No. 671,0!2. Patented Apr. 2, I901.

w. a. CHAPIN.

KNOCKDDWN PAPER BOX.

(Application filed June 18, 1900.) (No Model.) 2 Sheets-Sheet l.

WITNESSES: 9; lN/ENTOR jazz Z/W v ATTORNEY 0112A, a? 02m 1n: mums PEYERS c0. ml'n-umo. wAs

iJNTTnn STATES PATENT OFFICE.

WILLIAM G. CI-IAPIN, OF BROOKLYN, NEW YORK, ASSIGNOR TO THE THOMPSON 8 NORRIS COMPANY, OF NEW JERSEY.

KNOCKDOWN PAPER BOX.

SPECIFICATION formingpart of Letters Patent No. 671,012, dated April 2 1901.

Application filed June 16, 1900.

T0 aZZ whom it may concern.-

Be it known that 1, WILLIAM G. CHAPIN, a citizen of the United States, residing in the borough of Brooklyn, in the county of Kings, in the city and State of New York, have invented certain new and useful Improvements in Knockdown Paper Boxes, of which the following is a specification;

This invention relates to the general class of boxes or crates made from paper fabric in two pieces, each of which is adapted to be pressed out flat for packing or shipment, but which when folded and telescoped one within the other form a stifi rigid box or crate.

The object of the present invention is to construct an exceedingly stifi and light box or receptacle, and the manner in which this objcct is attained will be hereinafter described.

In the accompanying drawings,Figure l is a perspective View of the box closed, and Fig. 2 is a similar view,but showing the cover raised. Fig. 3 is an enlarged detail View of the particular kind of paper fabric of which the box is made. Fig. 4 is a sectional View of the outer casing or part of the closed box, the inner casing or part being represented in elevation. Fig. 5 represents the inner casing or part spread out. Fig. 6 represents the outer part or casing in perspective,and Fig. 7 represents the same as partly flattened.

The material from which the box is made is best illustrated in Fig. 8 and is known as cellular board. It consists of two flat sheets 00 0c, of paper, and a sheet y, of corrugated paper, between the flat sheets. These sheets being pasted together and dried under heat and pressure produce a fabric which is very light in proportion to. its rigidity and stiifness.

A designates as a whole the outer casing or part of the box. It is in the nature of a rectangnlar tube openat the ends. This casing is preferably formed of a single piece of the cellularfabric, the corrugations of the sheet corrugations is seen in Fig.4 The meeting ends of the fabric are hingedtogether at one Serial No.- 20,505. (No model.)

of the corners by a strip of some suitable fabric. The casing A comprises four sides a.

The inner part or casing Bis made from the same paper fabric as the outer casing in one piece,with the corrugations of the sheet y extending roundwise and the creases between the sides b extending transversely of the corrugations. .One of the sides I) at the end of the piece is narrowerthan the others, and at the opposite end of the piece there is a flap or tuck 19 The combined widthsof the side band tuck equal the width of the opposite side b. At each end of each side I) is a mitered flap b and these when folded in, as seen in Fig. 4, meet and form an end to the folded inner casing. As herein shown, these mitered flaps are truncated or have their free angles cut away. The object of this is to economize in material and weight. It is found that when the inner casing is folded and inclosed in the packing and storing and how they may be folded and the part B inserted into the part A. The flap b may have a tab 0, of paper or cloth, whereby the flap can be drawn out, as in Fig. 2.

The leading features of the invention are the construction of the inner casing B so that it will be, when folded and inclosed, very stiif and unyielding and the employment for the parts of a peculiarly stiff and light fabric.

Such a box as that described is especially well adapted for inclosing fragile articles, such as those employed in millinery; but it may of course be used for crating or boxing any articles.

It will be noted that the flap b has no mitered end pieces or need not have any and that the corrugations of fabric in the outer casing extend at right angles to those in the sides I) of the inner casing. This imparts great rigidity to the fabric. When the two parts of thebox are put together, as in Fig.

'1, two opposite sides Z) of the inner casing 13 close the otherwise open ends of the outer casing A. The fitting together of the mitered flaps resists a crushing pressure on the box.

Having thus described my invention, I claim 1. A knockdown box made from stiff, cellular paper fabric in two separate and separable parts, namely, the outer casing A, of four sides hinged together to form a square, collapsible, open-ended tube, and the inner casing B, said inner casing having mitered flaps and consisting of sides hinged together and adapted when folded to form a tube of such length that it may be inserted sidewise into the outer casing, said casings having the corrugations extending round wise in each, and the corrugations of the outer casing at right angles to those of the inner casing.

2. A knockdown box made from stiff, cellular paper fabric in two parts, namely, the outer casing A, of four sides hinged together to form a collapsible, open-ended tube, with the corrugations in the fabric extending roundwise, and the inner casing B, composed of sides hinged together, the length of the sides being substantially equal to the interior width of the outer casing, whereby the inner casing may be inserted into the outer one sidewise so as to fit snugly therein, the sides of the inner casing having hinged and mitered end flaps, and the hinging creases in both casings extending crosswise of the corrugations of the material, whereby the corrugations of the outer and inner casings are arranged at right angles.

3. A knockdown box made from stiff, cellular paper fabric in two parts, namely, the outer casing A, and the inner casing B, the inner casing having three sides I), a narrower terminal side I), and a flap b and said sides having mitered flaps b substantially as set forth.

In witness whereof I have hereunto signed my name, this 14th day of June, 1900, in the presence of two subscribing witnesses.

WILLIAM G. OI-IAPIN.

Witnesses:

MARTIN H. DAY, ED. S. SHARPE. 

